Hi! I recently was given a treadmill by a co-worker and it does not work. The top panel appears to be stripped off, and there are only holes where the numbers show. The motor does not turn on, but the numbers turn on, but do not stay on. The belt does not turn on by itself, but can manually be turned. It appears to be a very old model. The model number is 21-6203A. Is there anything I can do? Or am I better off purchasing a new one? Please let me know. Thanks! Amy